Calcimining compound



UNITED STATES PATENT OFFICE. I

CALClMlNlING COMPOUND.

SPECIFICATION formingpart of LettersPatent No. 283,130, dated August 14, 1883.

' Application filed March 14, 1883. (No specimens.)

To-ctZZ whom it may concern: 1

Be it known that I, OoENELrUs M. MoCAR- TY, a citizen of the United States, residing at Romney, in the county of Hampshire and State of Vest Virginia, have invented a new. and useful CalciminingOompound, of which the following is a specification, reference being bad to the accompanying drawings.

This invention relates to compounds for calcimining purposes; and it has for its obj eet to produce a calcimine that will not crack or wall is very rough and porous.

peel off, but will hold fastto any surface, and it possesses other important advantages, allof p which will be hereinafter setforth.

The ingredients I use in this composition are substantially in the following proportions, viz:

. )aris-white three ounds and nine ounces' 7 7 groundwhite glue, five ounces; glycerine, onehalf ounce; alum, one-and one-half ounce.

In preparing the calcimine for market, mix

the glue and glycerine together, and then add the paris-white, the whole to be put up in dry packages. The alum is to be put up in a sep arate package, and in these two packages the compound is sold on the market.

When mixing the compound for immediate use,put the paris-white,'glue, and glycerine in a suitable pail. Pour into it about two and onehalf pints of boiling water, and stir well until dissolved. Then add one and one-half pints of cold water, stir again, and the calcimine is ready for use.

The alum may need only be used when a When desired to be used, the alum should be dissolved in a half gallon of boiling water, and should be applied to the wall, before puttingthe second coat of the first three ingredients. When finishing a rough wall, the alum makes the second coat work smoothly, and it also saves material when i the wall is rough and'porous.

I The glycerine makes the calcimine work very smoothly and spread easily, so that any one can apply it to the walls without being experienced in calcimining. The alum keeps it from setting and drying fast, as other calcimines do, and it also keeps it from cracking or peeling off. The walls will not appear streaked when applied, and will not stainby water.

a substantially as stated.

forty-five square yards and give a better body than generally secured. The calcimined surface is veryhard and firm, thereby preventing it from being rubbed ofi". V

The compound can be sold very cheap and made in all tints and colors, the coloring-matter being contained in the quantity of paris-. white. It is applied in the usual manner by means of a-brush either on a rough or smooth wall.

The advantages of this calcimine will be readily appreciated by those having experience in ealcimining, as its cheapness, durability, and ready application will appear apparent to all. p

I am aware that, itis not new to combine gypsum, alum, borax, and pulverized glue to form a calciinining compound. I am also aware that it is not new to combine pulverized gypsum, glue, and sulphate of zinc for the same purpose; but I am not aware that glyeerinehas been used heretofore for this purpose. This ingredient adds a valuable feature to the compound by making thecalcimine work more smoothly on the wall, somewhat similar to paint. It also makes the compound spread more easily on the wall without danger of streaking. It possesses other advantages, principal among these being that it adds to the brilliancyand strength of the color or polish. I therefore make no claim to the combination of plaster-of-paris and glue, as I am aware that it is old; but,

Having thus described my invention, what I claim is A compound for calcimining purposes, c011- sisting of paris-white, ground white glue, and glycerine mixed together in the proportions In testimony thatI claim the foregoing as my own Ihave hereto affiXed my signature in presence of two witnesses.

conrnmus MILFORD norm. 

